android – setVisibility(View.GONE)不会消失视图

在我的活动中,我有一个开始按钮,当点击它时它应该淡出并最终通过setVisibility(View.GONE)消失

问题是设置可见性GONE不会消失视图,它仍然可见.我有目的地使视图动画淡出为0.1(而不是0),即使在我调用了setVisibility(View.GONE)之后,我也可以在后台看到它.

fadeout动画anim_fade_out.xml是：

<?xml version="1.0" encoding="utf-8"?>
<set
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/linear_interpolator"
    android:fillAfter="true" android:fillEnabled="true">

        <alpha
            android:fromAlpha="1.0"
            android:toAlpha="0.1"
            android:duration="200" />
</set>

方法是showTimer()：

private void showTimer() {
    final LinearLayout startButtonArea = (LinearLayout)findViewById(R.id.startButtonArea);      

    Animation animFadeOut = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.anim_fade_out);

    startButtonArea.startAnimation(animFadeOut);

    animFadeOut.setAnimationListener(new AnimationListener() {
        @Override
        public void onAnimationEnd(Animation animation) {
            startButtonArea.setVisibility(View.GONE);
            Log.d("Animation ended","startButtonArea SHOULD BE GONE BUT IT ISN'T");
        }
        @Override
        public void onAnimationRepeat(Animation animation) {}
        @Override
        public void onAnimationStart(Animation animation) {}    
    });

}

重申一下,我知道动画的结束alpha是0.1(通常是0)但是我想确认视图是GONE而不是.

因为fillAfter为true,所以动画会在调用onAnimationEnd之后设置属性.您可以将fillAfter更改为false,或者像这样执行：

@Override
public void onAnimationEnd(Animation animation) {
    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            startButtonArea.setVisibility(View.GONE);
            Log.d("Animation ended","startButtonArea SHOULD BE GONE BUT IT ISN'T");
        }
    }, 0);
}